E. Stuessi

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Functional units in the human foot provide a meaningful basis for subdivisions of the entire foot during gait analysis as well as justified simplifications of foot models. The present study aimed to identify such functional units during walking and slow running. An invasive method based upon reflective marker arrays mounted on intracortical pins was used to(More)
Magnetic resonance (MR) imaging is becoming increasingly important in the study of foot biomechanics. Specific devices have been constructed to load and position the foot while the subject is lying supine in the scanner. The present study examines the efficacy of such a newly developed device in replicating tarsal kinematics seen during the more commonly(More)
BACKGROUND The dependence of the movements of the calcaneus, cuboid, navicular, and talus on each other have been described as the tarsal gearbox. To provide a basis of its modeling, data on transmissions between tarsal joint rotations within this gearbox are required. The feasibility of tibiocalcaneal rotations to predict tarsal joint rotations is of(More)
The purpose of this study was to determine the reliability of tarsal bone segmentation based on magnetic resonance (MR) imaging using commercially available software. All tarsal bones of five subjects were segmented five times each by two operators. Volumes and second moments of volume were calculated and used to determine the intra- as well as(More)
— X-Ray video fluoroscopy is nowadays a common technique to retrieve in vivo 3D kinematic data of the knee joint during human motion activities. Unfortunately, since a fluoroscopic imaging system is designed to be stationary during measurement, the knee joint moves out of field of view of the fluoroscope during level walking. Therefore, it becomes(More)
In the current work, a magnetic resonance (MR) imaging procedure to evaluate quasi-static motion of the calcaneus, cuboid, navicular, and talus is presented. It is focused on the applicability of a newly developed foot loading and positioning device. For that purpose, tarsal bone positions of three healthy subjects in a pronated and a supinated foot(More)
Magnetic resonance imaging offers unique insights into three-dimensional foot bone motion. Thereby, adequate devices enabling defined loading and positioning of the foot are needed to profit from this noninvasive procedure. Tarsal bone positions of three healthy subjects were repeatedly measured in a pronated and a supinated foot excursion under bodyweight(More)
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